Courage, determination, and perseverance are qualities that are often associated with the terms GRIT, SPIRIT, and GUTS. GRIT is defined as courage and resolve; an inner strength that enables a person to face difficulty with determination and perseverance. SPIRIT is defined as enthusiasm and determination; a strong will to succeed. GUTS is defined as courage and boldness; the ability to take risks and face danger without fear. All three of these qualities are essential for success in any endeavor.